22212151 has 8 divisors (see below), whose sum is σ = 24692864. Its totient is φ = 19841760.

The previous prime is 22212133. The next prime is 22212187. The reversal of 22212151 is 15121222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22212151 - 2¹¹ = 22210103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27156 + ... + 27961.

It is an arithmetic number, because the mean of its divisors is an integer number (3086608).

Almost surely, 2^22212151 is an apocalyptic number.

22212151 is a deficient number, since it is larger than the sum of its proper divisors (2480713).

22212151 is a wasteful number, since it uses less digits than its factorization.

22212151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55161.

The product of its digits is 80, while the sum is 16.

The square root of 22212151 is about 4712.9768724236. The cubic root of 22212151 is about 281.1017433605.

Adding to 22212151 its reverse (15121222), we get a palindrome (37333373).

The spelling of 22212151 in words is "twenty-two million, two hundred twelve thousand, one hundred fifty-one".